.\"	$OpenBSD: asp.4,v 1.16 2007/05/31 19:19:54 jmc Exp $
.\"
.\"
.\" Copyright (c) 1999 Michael Shalayeff
.\" All rights reserved.
.\"
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.Dd $Mdocdate: May 31 2007 $
.Dt ASP 4 hppa
.Os
.Sh NAME
.Nm asp
.Nd core bus controller as present on older
.Tn HP 9000/700
machines
.Sh SYNOPSIS
.Cd "asp0    at mainbus? irq 28"
.Cd "gsc* at asp?"
.Sh DESCRIPTION
The supported Core bus controllers are those present on older
.Tn PA-RISC
workstations, and include:
.Pp
.Bl -bullet -compact
.It
Core bus controller
.It
System Clock
.It
Interrupt Controller
.It
DMA Controller
.It
Real Time Clock Interface
.It
RAM and EEPROM controllers
.El
.Pp
The irq level supplied is hardwired to the CPU pin, so changing the value
would not produce any noticeable results (except lost interrupts for the whole
I/O subsystem).
.Sh MACHINES
An incomplete list of machines that use the
.Tn ASP
bus controller:
.Pp
.Bl -bullet -compact
.It
705, 710
.It
715/{33,50,75}
.It
725/{50,75}
.It
720, 730, 750
.It
735/*
.It
745i/{50,75}
.It
747i/{50,75}
.It
755/*
.El
.Sh SEE ALSO
.Xr gsc 4 ,
.Xr intro 4 ,
.Xr io 4
.Rs
.%T "Hardball I/O Subsystem ERS"
.%N Revision 1.1
.%D 30 September 1991
.%Q Hewlett-Packard
.Re
.Sh HISTORY
The
.Nm
driver
appeared in
.Ox 2.4 .
